Since Zurich is relatively small and mostly car-free, it's best to explore on foot. Most landmarks clustered in the old town along the river, so you can see most everything within an hour or two.
If you want a flexible schedule, try my self-guided Zurich walking tour that wanders the cobblestone lanes of the old town.
If you don’t have time or energy for a full walking tour, we suggest visiting a few of the most popular landmarks and viewpoints. See all our favorite Zurich photo spots.
⏱️Plan about 90 mins to 2 hours, depending on how many stops you make at various landmarks and shops.
Other options
I also have chocolate walking tour, which visits a bunch of chocolate shops as you explore the old town, particularly nice if you have kids in your group.
➡️ See also Guided Walking Tours and Reduced Mobility Tours.